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Re: lists of DNS servers by region.
Stephen, thnx .. I think query source refer to DNS server right? not necessary actally host that requesting qurey? Suppose if a ISP does not have fully messed DNS server then result may not be optimum? --------------------------------------------------- Tatsuya Kawasaki - Engineer III - CSC [email protected] - 240-616-2417 800-581-8711 (24 Hour Support) - 240-616-2414 (fax) Allegiance Internet On Wed, 11 Dec 2002, Stephen Sprunk wrote: > Date: Wed, 11 Dec 2002 10:21:45 -0600 > From: Stephen Sprunk <[email protected]> > To: Tatsuya Kawasaki <[email protected]>, nanog ml <[email protected]> > Subject: Re: lists of DNS servers by region. > > > Tatsuya Kawasaki wrote: > > Many web sites which are mulihome/mult co-located seem to act > > differnetly depend on which DNS severs that we use. > > > > Questions: > > 1. Does anyone have lists of DNS servers by region to may optimize the > > path?-- of course it may depend on the network topology ...Assume that > > If ISP is fully messed with others.. ie Teir I provider for exmaple. > > > > 2. what is the typical of method they(web hosts) used to decide > > which one to give? > > Many DNS "load balancing" solutions will return the address of the web > server closest to the _query source_. This means these systems work best > when your recursive DNS servers are topologically closest to your users. > > S >